US5458349A - Multi-function electric wheel-chair - Google Patents
Multi-function electric wheel-chair Download PDFInfo
- Publication number
- US5458349A US5458349A US08/269,873 US26987394A US5458349A US 5458349 A US5458349 A US 5458349A US 26987394 A US26987394 A US 26987394A US 5458349 A US5458349 A US 5458349A
- Authority
- US
- United States
- Prior art keywords
- sitting
- hinged
- rod
- gear
- chair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001681 protective Effects 0.000 claims description 3
- 230000036633 rest Effects 0.000 claims 2
- 230000036544 posture Effects 0.000 description 13
- 238000010586 diagrams Methods 0.000 description 4
- 241000209134 Arundinaria Species 0.000 description 3
- 210000004369 Blood Anatomy 0.000 description 1
- 208000004210 Pressure Ulcer Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 201000010099 diseases Diseases 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 230000000474 nursing Effects 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/14—Standing-up or sitting-down aids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S180/00—Motor vehicles
- Y10S180/907—Motorized wheelchairs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S297/00—Chairs and seats
- Y10S297/10—Occupant-arising assist
Abstract
Description
This type of new practical wheel-chair, is a non-motorized multi-function vehicle, which especially services the disabled.
At present, the wheel-chair provided to the disabled or the patient in the hospital usually consists of the frame foundation and the sitting block which is fixed to the frame foundation, the chair is equipped with two small wheels under the front of the frame foundation, and two big wheels at the back, when walking, the disabled turns both auxiliary wheels beside the big wheel with both hands and the big wheels roll as the auxiliary wheel is turned round so that the wheel-chair can move same time the big wheel is rotated, so that the disabled can travel up hill.
This kind of motorized wheel-chair has the following disadvantages:
1. It is used for walking and can provide only one kind of a fixed sitting posture. Because the sitting block of the chair is fixed to the frame foundation, and resembles a fixed chair, the user can sit on it with only one posture. During long periods of time, the load on the user's lower body might be aggravated and his blood may not flow fluently. It's also easy to cause body malformation.
2. The disabled or the patient in the hospital can not be cared for by a nurse every minute. Some patients need to do simple tasks, such as standing up to get something or leaning backwards to rest. Because the sitting posture of the present wheel-chair for the handicapped can not be adjusted, both the patient and nurse have many troubles.
3. When the convalescent patient or the lower-limb-cripple sits in the same place for long periods of time it is easy to get bedsores in the summer. This causes the convalescence to be prolonged and other diseases to occur.
4. It is difficult for the sitter to stand with a cane from the sitting position. Because the position can not be adjusted smoothly, the sitter must render some action from one kind of posture to the other, but the patient can not stand with a cane with numb legs.
In order to overcome the technical disadvantages mentioned above, we invented a practical and safe, electric, multi-function wheel-chair which provides a sitting block with variable inclination.
This new type of practical whet-chair is realized by the following technical project: the chair-like sitting block is piecemeal hinged to the backing plate, and the inclination is adjustable, the back part of which is hinged to the upper parts of two rods curved upwards of the two "L-shape" supporting rods placed symmetrically; the "L-shape" supporting rod is placed under the sitting plate and parallels to it; the front end of supporting rod is hinged to the vertical rod of the beam column on the frame foundation; the transverse worm of the drive-gear is placed in the bearing pedestal placed on the back of the main frame foundation; the transverse worm is driven by the motor M, the worm gear gearing into the transverse worm is placed in the gear-box of the two parts which are extended from the transverse worm; there are two inclined screw control racks which fall into the worm-gear's inner hole with a spiral thread; when the motor drives in worm-gear, the transverse worm can be driven by the worm-gear and make the screw control rack outstretch or retract, so that the sitting posture can be changed.
From the above, we can see the outstanding features of the new practical wheel-chair. They are as follows:
1. The screw control rack is hinged with the sitting block that consists of piecemeal-jointed parts. Because of such a design, the shape of the support of the sitting block can be changed according to the variable sitting posture that is desired.
2. The wheel-chair mentioned above is convenient for the sitter, enabling him to change his sitting, standing or leaning posture from one to another. This not only brings convenience and comfort to the sitter, but also reduces the difficulty of nursing and is profitable for the patient's recovery.
3. The sitting posture can be adjusted conveniently and the patient can change the posture according to the desired conditions. The changing of the sitting posture can safely and smoothly be acquired.
Detailed structures of this type of new and practical wheel-chair are demonstrated by the following examples as in FIG. 1 to FIG. 8.
FIG. 1--The stereoscopic structural diagram of this type of new and practical wheel-chair;
FIG. 2--The structural magnifying diagram of the screw control rack connected with the sitting block in FIG. 1;
FIG. 3--The structural magnifying diagram of part B in FIG. 1;
FIG. 4--The structural magnifying diagram of the gear-box in FIG. 2;
FIG. 5--A-direction view of FIG. 2;
FIG. 6, FIG. 7, FIG. 8--Sketches of different sitting postures for this type of new and practical wheel-chair.
The structures of this type of new and practical wheel-chair are detailed as follows (see FIGS. 1 to 8):
This type of practical wheel-chair is equipped with a main frame foundation with two rollers; Above the main frame foundation (4) is a chair-like sitting block (5), which consists of a backing plate (51), a sitting plate (52) and two arm-rest plates (53); the drive-gear (1) is placed under the rear part of the sitting block (5); the two pedal-rods (54) placed before the sitting block are symmetrically hinged to the front part of the sitting plate (52); the characteristics of the chair are; the chair-like sitting block (5) is hinged to the backing plate (51), the back part of which is hinged to the upper parts of two rods curved upwards of the two "L-shape" supporting rod (60) placed symmetrically; the "L-shape" supporting rod (60) is placed under the sitting plate (52) and parallel to it; the front end of the supporting rod (60) is hinged to the vertical rod (411) of the beam column on the frame foundation (4); the supporting rod (501) extending downwards on the front of two symmetric sides of the sitting plate (52) is hinged to the upper flank of the front main frame foundation (4); the transverse worm (13) of the drive-gear is placed in the bearing pedestal (12) placed on the back of the main frame foundation (4); the transverse worm (13) is driven by the motor M; the worm-gear (17) gearing into the transverse worm screw is placed in the gear-box (2) having the two worm extensions which are extended from the transverse worm; there are two inclined screw control rack (11) falling in the worm-gear's (17) inner hole with spiral thread (19); the upper end of screw control rack (11) is hinged to the middle of the side rod (50) which is jointed into the flank of the sitting plate (52), as shown in FIGS. 1 through 4.
The structural features of this type of new and practical wheel-chair consist yet in: there are two horizontal probe-rods (511) under the rear part of the sitting plates (51) of the chair-like sitting block (5); the back ends of the horizontal probe-rods (511) are hinged with the upper end of the part of the "L-shape" supporting rod (60) which curves upward (601); the from of the probe-rod is drooping and is parallel to the side-rod (60) of the sitting plate (52) with some span, the end of the front probe-rod is hinged to the end of the upper part of the vertical column (411) on the frame foundation (4), the lower part of the side-rod's (50) from part is hinged with a vertical supporting rod (501) extending downwards, the lower part of the supporting rod (501) is hinged to the from of the upper part of the main frame foundation (4); the lower parts of the two drooping floor sheets are hinged to the middle of the vertical front column (57) of the main frame foundation by a hinged rod (56); the motor M of the drive-gear drives the transverse worm (13) by the decelerating gear; the transverse worm (13) and inclined control rack (11) are contained in the gear box (2); the gear box, the transverse worm and the motor are all contained in the protective case (14) as shown in FIGS. 1, 2 and 4.
The adjacent rods are hinged with a pin shaft (3) at the anchor point; the upper part of the control rack (11) is hinged with the back half of the symmetric side-rod (50) of the sitting plates (52); the lower part of the screw control rack is free and can ascend or retract by the drive of worm-gear (refer to FIGS. 4 and 5). There are two floor sheets located at the front of the drooping pedal-rod's lower part; the height of the lowest point A, which the drooping pedal-rod (54) can reach while moving, is lower than that of the lowest point B of the smaller wheel's rim.
The working principle of this type of new practical wheel-chair is shown in FIGS. 6 to 8. FIG. 6 shows its normal sitting posture, at this time, "L-shape" supporting rod (60) and sitting plate (52) are in the horizontal position, backing plate (51) is at right angle with the sitting plate (52).
If the users desires to change the sitting posture, first user should open the starting pushbutton of motor M, so that the transverse worm is driven by the motor, the screw control rack (13) outstretches upwards and the sitting plate (52) is pushed up gradually, as shown in FIG. 7; the inclination angle of the sitting block can be changed by the button. The maximum inclination position of the sitting plate is shown in FIG. 8. At this time, the sitter can stand up and pick up something, or go to the ground by the use of a cane. If he wants to return to the sitting chair, first he should stand steadily, and then push the inverse-button so that the screw control rack retracts and the sitting plate draws back to the proper position.
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/269,873 US5458349A (en) | 1994-06-30 | 1994-06-30 | Multi-function electric wheel-chair |
DE4425651A DE4425651A1 (en) | 1994-06-30 | 1994-07-20 | Multi-function electric wheelchair |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/269,873 US5458349A (en) | 1994-06-30 | 1994-06-30 | Multi-function electric wheel-chair |
DE4425651A DE4425651A1 (en) | 1994-06-30 | 1994-07-20 | Multi-function electric wheelchair |
Publications (1)
Publication Number | Publication Date |
---|---|
US5458349A true US5458349A (en) | 1995-10-17 |
Family
ID=25938508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/269,873 Expired - Fee Related US5458349A (en) | 1994-06-30 | 1994-06-30 | Multi-function electric wheel-chair |
Country Status (2)
Country | Link |
---|---|
US (1) | US5458349A (en) |
DE (1) | DE4425651A1 (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5924720A (en) * | 1997-04-03 | 1999-07-20 | Keehne; Robert W. | Wheelchair with elevatable seat |
US6126186A (en) * | 1998-11-09 | 2000-10-03 | Invacare Corporation | Constant center of gravity tilt seat of a wheelchair |
US6231067B1 (en) | 1998-01-12 | 2001-05-15 | Fena Design, Inc. | Motorized standing wheelchair |
US6454285B1 (en) * | 2000-03-21 | 2002-09-24 | Larry Koenig | Ergonomic wheelchair with patient lifting mechanism |
US20050046129A1 (en) * | 2003-08-15 | 2005-03-03 | Antonishak Stephen J. | Constant center of gravity lift and tilt mechanisms for a wheelchair seat |
US20050116440A1 (en) * | 2003-03-31 | 2005-06-02 | Todd Bernatsky | Personal mobility vehicle with tiltable seat |
US20050236812A1 (en) * | 2004-04-07 | 2005-10-27 | Firth Charles B | Wheelchair with elevating seat |
US20070227787A1 (en) * | 2006-03-15 | 2007-10-04 | Yoshisuke Kuramoto | Electric wheelchair equipped with a raising/lowering function |
US20070278761A1 (en) * | 2006-05-24 | 2007-12-06 | Firth Charles B | Wheelchair with elevating seat |
KR100805743B1 (en) | 2004-03-08 | 2008-02-21 | 재단법인 산재의료관리원 | A wheelchair which can stand up by electric power |
WO2012020325A1 (en) * | 2010-08-10 | 2012-02-16 | Kasko Group, Uab | Special work and rest chair, intended to be used for people (especially for children) with locomotor disability, particularly in case of cerebral paralysis (palsy) |
US20120161484A1 (en) * | 2010-12-28 | 2012-06-28 | Taiwan An I Co., Ltd. | Wheelchair tilting mechanism |
BE1019628A3 (en) * | 2009-05-25 | 2012-09-04 | Sichelschmidt Stanzwerk | SEATING FURNITURE WITH ASSISTANCE. |
US20120290160A1 (en) * | 2010-11-05 | 2012-11-15 | Aerobic Cruiser Hybrid Cycles, Llc | Electric vehicle power regulating control method with manual-assist hybrid modes |
US8567804B1 (en) | 2011-05-25 | 2013-10-29 | Jody M. Hoenhause | Mobile device for supporting a user in a standing, sitting, or kneeling position |
CN105012092A (en) * | 2015-07-28 | 2015-11-04 | 周彩华 | Multifunctional wheelchair |
CN105125356A (en) * | 2015-09-01 | 2015-12-09 | 浙江理工大学 | Standing-up assisting wheelchair |
US9370456B2 (en) * | 2014-11-24 | 2016-06-21 | Robert J. Balderson | Chair assembly |
CN105748216A (en) * | 2016-04-14 | 2016-07-13 | 佛山市顺康达医疗科技有限公司 | Automatic lifting wheelchair |
CN105945993A (en) * | 2016-03-23 | 2016-09-21 | 合肥工业大学 | Leg mechanical support rod mechanism capable of automatically moving |
US9713559B2 (en) | 2013-03-15 | 2017-07-25 | Stryker Corporation | Medical support apparatus |
US10813806B2 (en) | 2016-05-24 | 2020-10-27 | Stryker Corporation | Medical support apparatus with stand assistance |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0077280A1 (en) * | 1981-10-01 | 1983-04-20 | Michel Fayolle | Lifting chair |
US5096008A (en) * | 1990-09-24 | 1992-03-17 | Jericho Corporation | Stand-up wheelchair |
US5346280A (en) * | 1992-03-31 | 1994-09-13 | Deumite Norman A | Chair with automatic standing aid |
-
1994
- 1994-06-30 US US08/269,873 patent/US5458349A/en not_active Expired - Fee Related
- 1994-07-20 DE DE4425651A patent/DE4425651A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0077280A1 (en) * | 1981-10-01 | 1983-04-20 | Michel Fayolle | Lifting chair |
US5096008A (en) * | 1990-09-24 | 1992-03-17 | Jericho Corporation | Stand-up wheelchair |
US5346280A (en) * | 1992-03-31 | 1994-09-13 | Deumite Norman A | Chair with automatic standing aid |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5924720A (en) * | 1997-04-03 | 1999-07-20 | Keehne; Robert W. | Wheelchair with elevatable seat |
US6231067B1 (en) | 1998-01-12 | 2001-05-15 | Fena Design, Inc. | Motorized standing wheelchair |
US6126186A (en) * | 1998-11-09 | 2000-10-03 | Invacare Corporation | Constant center of gravity tilt seat of a wheelchair |
US6206393B1 (en) * | 1998-11-09 | 2001-03-27 | Invacare Corporation | Constant center of gravity tilt seat of a wheelchair |
US6454285B1 (en) * | 2000-03-21 | 2002-09-24 | Larry Koenig | Ergonomic wheelchair with patient lifting mechanism |
US20050116440A1 (en) * | 2003-03-31 | 2005-06-02 | Todd Bernatsky | Personal mobility vehicle with tiltable seat |
US8474848B2 (en) | 2003-03-31 | 2013-07-02 | Sunrise Medical (Us) Llc | Personal mobility vehicle with tiltable seat |
US20050046129A1 (en) * | 2003-08-15 | 2005-03-03 | Antonishak Stephen J. | Constant center of gravity lift and tilt mechanisms for a wheelchair seat |
KR100805743B1 (en) | 2004-03-08 | 2008-02-21 | 재단법인 산재의료관리원 | A wheelchair which can stand up by electric power |
US20050236812A1 (en) * | 2004-04-07 | 2005-10-27 | Firth Charles B | Wheelchair with elevating seat |
US20070227787A1 (en) * | 2006-03-15 | 2007-10-04 | Yoshisuke Kuramoto | Electric wheelchair equipped with a raising/lowering function |
US20070278761A1 (en) * | 2006-05-24 | 2007-12-06 | Firth Charles B | Wheelchair with elevating seat |
BE1019628A3 (en) * | 2009-05-25 | 2012-09-04 | Sichelschmidt Stanzwerk | SEATING FURNITURE WITH ASSISTANCE. |
WO2012020325A1 (en) * | 2010-08-10 | 2012-02-16 | Kasko Group, Uab | Special work and rest chair, intended to be used for people (especially for children) with locomotor disability, particularly in case of cerebral paralysis (palsy) |
US20120290160A1 (en) * | 2010-11-05 | 2012-11-15 | Aerobic Cruiser Hybrid Cycles, Llc | Electric vehicle power regulating control method with manual-assist hybrid modes |
US20120161484A1 (en) * | 2010-12-28 | 2012-06-28 | Taiwan An I Co., Ltd. | Wheelchair tilting mechanism |
US8567804B1 (en) | 2011-05-25 | 2013-10-29 | Jody M. Hoenhause | Mobile device for supporting a user in a standing, sitting, or kneeling position |
US9713559B2 (en) | 2013-03-15 | 2017-07-25 | Stryker Corporation | Medical support apparatus |
US9370456B2 (en) * | 2014-11-24 | 2016-06-21 | Robert J. Balderson | Chair assembly |
CN105012092A (en) * | 2015-07-28 | 2015-11-04 | 周彩华 | Multifunctional wheelchair |
CN105125356A (en) * | 2015-09-01 | 2015-12-09 | 浙江理工大学 | Standing-up assisting wheelchair |
CN105945993A (en) * | 2016-03-23 | 2016-09-21 | 合肥工业大学 | Leg mechanical support rod mechanism capable of automatically moving |
CN105748216A (en) * | 2016-04-14 | 2016-07-13 | 佛山市顺康达医疗科技有限公司 | Automatic lifting wheelchair |
CN105748216B (en) * | 2016-04-14 | 2018-05-25 | 佛山市顺康达医疗科技有限公司 | A kind of automatic lifting wheelchair |
US10813806B2 (en) | 2016-05-24 | 2020-10-27 | Stryker Corporation | Medical support apparatus with stand assistance |
Also Published As
Publication number | Publication date |
---|---|
DE4425651A1 (en) | 1996-01-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Expired due to failure to pay maintenance fee |
Effective date: 19991017 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |